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"Electronic Components from Beginner to Master" is divided into two parts: Part One and Part Two. The first part is a basic introductory chapter. It uses industry qualification standards as the standard, selects typical components, and comprehensively and systematically introduces the functions, characteristics, identification, application and detection methods of various commonly used electronic components. The main contents include basic electronic knowledge, functional characteristics and identification testing of resistors, functional characteristics and identification testing of capacitors, functional characteristics and identification testing of inductors, functional characteristics and identification testing of diodes, functional characteristics and identification testing of transistors, functional characteristics and identification testing of field effect transistors, functional characteristics and identification testing of thyristors, functional characteristics and identification testing of integrated circuits, and functional characteristics and identification testing of commonly used electrical components. The next part is maintenance application. Guided by the skill requirements of the electronic and electrical industry, starting from the methods and techniques of reading circuit diagrams, it introduces in detail the maintenance and testing techniques of electronic components in electronic products and various control circuits. The main content includes the methods and techniques for reading circuit diagrams, the characteristics and use of components disassembly and welding tools, the maintenance of components in air conditioners, the maintenance of components in refrigerators, the maintenance of components in LCD TVs, and the maintenance of components in electric fans. , Maintenance of components in electric kettles, maintenance of components in microwave ovens, maintenance of components in induction cookers, maintenance of components in motor control circuits, maintenance of components in frequency conversion control circuits, and maintenance of components in lighting control circuits, etc. The content of this book adopts the style of color illustrations. The content is from shallow to deep, with clear layers and highlighted key points. It combines theory and practice, making it very convenient for readers to learn. This book has printed QR codes on important knowledge points. Readers only need to scan the QR codes in the book with their mobile phones to browse the teaching videos corresponding to the knowledge points in real time on their mobile phones, helping readers to easily understand complex and difficult professional knowledge. This book can be used by electronic and electrical technicians to study and use, and can also be used as a relevant professional teaching material for vocational colleges and training schools.